https://rd1.sony.net/help/dmp/nwa50/h_ww/
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Depending on the country/region in which you have purchased your Walkman, some models may not be available.
Be sure to read the instructions for microSD cards in the Help Guide on the Internet before you store content on a microSD card (not supplied).
The alarm (beep) and warning [Check the volume level.] are intended to protect your ears. They occur when you initially turn the volume up to a harmful level. You can cancel the alarm and warning by tapping [OK] on the alert dialog.
Note
You can listen to music stored on your Walkman from Bluetooth audio devices such as headphones or speakers.
You can also listen to music stored on your smartphone or computer through the Walkman. Refer to the "Help Guide" for details on using the Bluetooth function.
When you connect Bluetooth audio devices wirelessly for the first time, the devices must be registered to each other. This registration is called "pairing."
Note
Your Walkman cannot charge the battery or is not recognized on your computer.
To read it, open the following folders in the system storage after you connect the unit to your computer.
[WALKMAN] - [Information_HelpGuide] - [Important_Information] After you double-click the [index.html] file, select a language.
Notice for customers: the following information is only applicable to equipment sold in countries applying EU directives
This product has been manufactured by or on behalf of Sony Corporation.
EU Importer: Sony Europe B.V.
Inquiries to the EU Importer or related to product compliance in Europe should be sent to the manufacturer's authorized representative, Sony Belgium, bijkantoor van Sony Europe B.V., Da Vincilaan 7-D1, 1930 Zaventem, Belgium.
This equipment has been tested and found to comply with the limits set out in the EMC regulation using a connection cable shorter than 3 meters.
To prevent possible hearing damage, do not listen at high volume levels for long periods.
Hereby, Sony Corporation declares that this equipment is in compliance with Directive 2014/53/EU.
The full text of the EU declaration of conformity is available at the following internet address: http://www.compliance.sony.de/
Wireless function
Operating frequency
Bluetooth: 2,400 – 2,483.5 MHz
NFC: 13.56 MHz
Maximum output power
Bluetooth: < 8.5 dBm [2,400 – 2,483.5 MHz]
NFC: < -27.3 dBμA/m at 10 m [13.56 MHz]
The validity of the CE marking is restricted to only those countries where it is legally enforced, mainly in the countries EEA (European Economic Area) and Switzerland.
Design and specifications are subject to change without notice.
Here you can download full pdf version of manual, it may contain additional safety instructions, warranty information, FCC rules, etc.